CN212840057U

CN212840057U - Air duct shock pad

Info

Publication number: CN212840057U
Application number: CN202021281724.5U
Authority: CN
Inventors: 李科; 李起彦; 田雪娟; 李锐
Original assignee: Chengdu Ruili Precision Manufacturing Co ltd
Current assignee: Chengdu Ruili Precision Manufacturing Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-30
Anticipated expiration: 2030-07-02

Abstract

The utility model belongs to the technical field of the shock pad, a wind channel shock pad is disclosed, can not follow the difference of wind speed and carry out the problem of self-adaptation adjustment in order to solve the wind channel shock pad. The utility model discloses can trigger the effect of rubber layer and spring and carry out antidetonation jointly under in the use for the deformation of shock pad is undulant at the deformation range within range of settlement, thereby can the different wind speed of self-adaptation (wind pressure) the use in wind channel, has solved prior art and has designed a shock pad to a wind channel and lead to problem with high costs. Simultaneously the utility model discloses in the use, can fluctuate the deformation on rubber layer in the within range of setting for, can prevent that the deformation on rubber layer from surpassing the deformation volume of setting for and taking place deformation, can improve the life of shock pad.

Description

Air duct shock pad

Technical Field

The utility model belongs to the technical field of the shock pad, concretely relates to wind channel shock pad.

Background

The shock pad is widely applied to various fields, such as buildings and mechanical equipment, so as to achieve the purpose of shock absorption and improve the stability of the buildings and the mechanical equipment.

In the prior art, the shock pad structure applied to the air duct is as follows: the hard cushion and the rubber layer are combined with each other, the hard cushion mainly plays a supporting role, and the rubber layer plays a damping role. However, after the material and thickness of the rubber layer are determined, the damping effect of the damping pad is determined, however, in different use scenes of the air duct, the vibration caused by different wind speeds and wind pressures is different, and the cost is very high due to the fact that the damping pad is designed for different air ducts respectively.

Disclosure of Invention

The utility model discloses a solve the wind channel shock pad and can not follow the difference of wind speed and carry out the problem of self-adaptation adjustment, and provide a wind channel shock pad, can follow the difference of in the wind channel (wind speed or wind pressure) and self-adaptation adjustment to improve the application range of shock pad, thereby left out the cost of difference design manufacturing shock pad.

For solving the technical problem, the utility model discloses the technical scheme who adopts is:

an air duct shock pad comprises an upper hard layer and a lower hard layer, wherein a rubber layer is arranged between the upper hard layer and the lower hard layer, and the air duct shock pad is characterized in that a first cavity is arranged in the middle of the lower hard layer, a second cavity communicated with the first cavity is arranged in the middle of the rubber layer, a piston hermetically connected with the first cavity is arranged in the first cavity, a spring is mounted on the piston, the lower end of the spring is connected to the piston, the upper end of the spring is connected to the inner top end of the second cavity, at least one sealed mounting cavity is further arranged on the lower hard layer, an energy accumulator is mounted in the mounting cavity, a check valve is mounted at the top of the energy accumulator, a movable cavity corresponding to the check valve is arranged in the rubber layer, a push rod for opening the check valve is mounted in the movable cavity, and the upper end of the push rod is mounted on the lower surface of the upper hard layer, the lower end of the ejector rod penetrates through the movable cavity and extends into the mounting cavity to be matched with the one-way valve, and a communication through hole is formed between the mounting cavity and the first cavity.

In some embodiments, the cross-sectional area of the first cavity is less than the cross-sectional area of the second cavity.

In some embodiments, the piston is provided with a first through hole opened in a vertical direction and a second through hole opened in a horizontal direction, the first through hole and the second through hole are communicated with each other, the second through hole penetrates through a side wall of the piston, the lower hard layer is provided with a pressure relief through hole, and the pressure relief through hole and the second through hole can correspond to each other.

In some embodiments, the check valve comprises a base installed in an air outlet channel of the energy accumulator, a through hole is formed in the middle of the base, a valve plate is installed at the bottom of the through hole, a guide rod extending into the through hole is connected to the valve plate, a return spring is sleeved on the periphery of the guide rod, the upper end of the return spring is fixedly connected with the inner top of the through hole, the lower end of the return spring is fixedly connected with the valve plate, and the ejector rod can extend into the through hole and is in contact with the guide rod.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses an air duct shock pad is in the use, can lead to the vibration range in wind channel to increase when the velocity of flow (or pressure) increases in the wind channel, thereby make the deformation volume on rubber layer increase, when the deformation volume on rubber layer increases to a certain extent, install the ejector pin on upper hard layer and contact the guide bar of check valve and make the valve block move down, thereby trigger the energy storage ware and open, discharge the high-pressure gas in the energy storage ware and enter into first cavity through communicating the through-hole, first cavity drives the piston upward movement under the effect of high-pressure gas, thereby extrude the spring, make the deformation volume increase of spring and improve the elasticity of spring, through the rigidity of spring reinforcing shock pad progressively promote the height of shock pad, make the vibration range of shock pad diminish; when the shock pad rises to a take the altitude, ejector pin and guide bar contactless again for the valve block resets under reset spring's effect and is not releasing high-pressure gas, makes to carry out antidetonation jointly under the effect of rubber layer and spring, makes the deformation of shock pad fluctuate in the deformation range of settlement, thereby can the use in the wind channel of different wind speeds (wind pressure) of self-adaptation, has solved prior art and has designed a shock pad and lead to problem with high costs to a wind channel.

Simultaneously the utility model discloses in the use, can fluctuate the deformation on rubber layer in the within range of setting for, can prevent that the deformation on rubber layer from surpassing the deformation volume of setting for and taking place deformation, can improve the life of shock pad.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the cooperation between the lift pin and the check valve of the present invention;

the labels in the figure are: 1. upper hard layer, 2, lower floor hard layer, 3, rubber layer, 4, first cavity, 5, second cavity, 6, piston, 7, spring, 8, installation cavity, 9, energy storage ware, 10, check valve, 101, base, 102, valve block, 103, guide bar, 104, reset spring, 11, intercommunication through-hole, 12, activity chamber, 13, ejector pin, 14, end cover, 15, first through-hole, 16, second through-hole, 17, pressure release through-hole.

Detailed Description

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Combine the attached drawing, the utility model discloses an air duct shock pad, including upper hard layer 1 and lower floor's hard layer 2, be provided with rubber layer 3 between upper hard layer 1 and the lower floor's hard layer 2, wherein the coefficient of elasticity of upper hard layer and lower floor's hard layer is less than the coefficient of elasticity of rubber layer 3, upper hard layer 1 and lower floor's hard layer 2 can adopt the steel sheet, material preparation such as plastics forms, technical personnel in the field can both understand and understand, in some embodiments, can also be at the outer surface spraying high temperature resistant layer on upper hard layer, lower floor's hard layer and rubber layer, in order to improve the high temperature resistance of shock pad, functional layer through the spraying difference makes the shock pad have different functions, for example can also spray the insulating layer, insulating protective layer etc., technical personnel in the field can both understand and understand, no longer describe herein. The middle part of the lower hard layer 2 is provided with a first cavity 4, the middle part of the rubber layer 3 is provided with a second cavity 5 communicated with the first cavity 4, the first cavity 4 is internally provided with a piston 6 hermetically connected with the first cavity, wherein the outer circumference of the piston is provided with a sealing ring, the sealing between the piston 6 and the bottom of the first cavity 4 is realized through a sealing cavity, the piston 6 is provided with a spring 7, the lower end of the spring 7 is connected on the piston 6, the upper end of the spring 7 is connected at the inner top end of the second cavity 5, preferably, the top of the first cavity 4 is also provided with a limiting block for limiting the movement position of the piston 6, the lower hard layer 2 is also provided with at least one sealed installation cavity 8, an energy accumulator 9 is installed in the installation cavity 8, the top of the energy accumulator 9 is provided with a one-way valve 10, the rubber layer 3 is provided with a movable cavity 12 corresponding to the position of the one-way valve 10, an ejector rod 13 used for opening the one-way valve 10 is installed in the movable cavity 12, wherein the movable cavity 12 has enough movable space, so that when the rubber layer 3 deforms, the rubber layer 3 cannot be in contact with the ejector rod 13, the upper end of the ejector rod 13 is installed on the lower surface of the upper hard layer 1, the lower end of the ejector rod 13 penetrates through the movable cavity 12 and extends into the installation cavity 8 to be matched with the one-way valve 10, and a communication through hole 11 is formed between the installation cavity 8 and the first cavity 4.

In some embodiments, a communication cavity for communicating the movable cavity 12 with the installation cavity 8 is formed in the lower hard layer 2, and the lower end of the ejector rod penetrates through the communication cavity to extend into the installation cavity 8 and is matched with the one-way valve. Preferably, a sealing ring is arranged between the ejector rod 13 and the communicating cavity and used for sealing between the ejector rod and the communicating cavity.

In some embodiments, the lower hard layer 2 is provided with a sealing end cap 14, and after the top rod 13 and the energy accumulator 9 are mounted, the sealing end cap 14 is mounted on the lower hard layer 2, so that the cavity for accommodating the energy accumulator 9 is a sealed mounting cavity 8.

In some embodiments, the accumulator 9 is also provided with a pressure relief valve and a gas nozzle, and the pressure inside the accumulator is regulated by the pressure relief valve to prevent the pressure from being too high; can supply high-pressure gas in to energy storage ware 9 through the air cock, correspondingly, the lower floor's stereoplasm layer 2 has seted up the passageway corresponding to the air cock position of energy storage ware, is convenient for supply high-pressure gas in to energy storage ware 9 through the air cock.

In some embodiments, the cross-sectional area of the first chamber 4 is smaller than that of the second chamber 5, so that when the high-pressure gas enters the lower end surface of the piston 4, the reaction force of the air above the upper end surface of the piston on the piston is smaller, so that the acting force of the piston 4 during the floating (or ascending) process by the high-pressure gas can be concentrated on the pressing spring 7, thereby improving the sensitivity of piston adjustment.

In some embodiments, the piston 4 is provided with a first through hole 15 opened in a vertical direction and a second through hole 16 opened in a horizontal direction, the first through hole 15 and the second through hole 16 are communicated with each other and form an L-shaped through hole, the second through hole 16 penetrates through a side wall of the piston 4, the lower hard layer 2 is provided with a pressure relief through hole 17, and the pressure relief through hole 17 can correspond to the second through hole 16. That is to say, when the piston motion was a take the altitude, second through-hole 16 can communicate each other with pressure release through-hole 17 to make high-pressure gas discharge through first through-hole, second through-hole and pressure release through-hole 17 and carry out the pressure release, in order to prevent that the atmospheric pressure in the first cavity 4 is too high, played the guard action.

Meanwhile, after pressure relief, if the rubber layer 3 can be kept in a set deformation range, the action of a spring is not needed at the moment; after pressure relief, if the deformation amplitude of the rubber layer 3 is too large, the one-way valve 10 can still be started to be opened so as to continuously lift the piston extrusion spring 7, and the deformation amplitude of the shock pad is reduced by utilizing the combined action of the rubber layer and the spring 7.

In some embodiments, the check valve 10 includes a base 101 installed in the air outlet channel of the energy accumulator 9, a through hole is opened in the middle of the base 101, a valve plate 102 is installed at the bottom of the through hole, a guide rod 103 extending into the through hole is connected to the valve plate 102, a return spring 104 is sleeved on the periphery of the guide rod 103, the upper end of the return spring 104 is fixedly connected with the inner top of the through hole, the lower end of the return spring 104 is fixedly connected with the valve plate 102, and the ejector rod 13 can extend into the through hole and contact with the guide rod 103.

Above, without any formal and essential limitations of the invention, it should be pointed out that, for a person skilled in the art, without departing from the method of the invention, several improvements and additions will be possible, which shall also be considered as the scope of protection of the invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent to the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.

Claims

1. An air duct shock pad comprises an upper hard layer and a lower hard layer, wherein a rubber layer is arranged between the upper hard layer and the lower hard layer, and the air duct shock pad is characterized in that a first cavity is arranged in the middle of the lower hard layer, a second cavity communicated with the first cavity is arranged in the middle of the rubber layer, a piston hermetically connected with the first cavity is arranged in the first cavity, a spring is mounted on the piston, the lower end of the spring is connected to the piston, the upper end of the spring is connected to the inner top end of the second cavity, at least one sealed mounting cavity is further arranged on the lower hard layer, an energy accumulator is mounted in the mounting cavity, a check valve is mounted at the top of the energy accumulator, a movable cavity corresponding to the check valve is arranged in the rubber layer, a push rod for opening the check valve is mounted in the movable cavity, and the upper end of the push rod is mounted on the lower surface of the upper hard layer, the lower end of the ejector rod penetrates through the movable cavity and extends into the mounting cavity to be matched with the one-way valve, and a communication through hole is formed between the mounting cavity and the first cavity.

2. The duct cushion of claim 1, wherein the first cavity has a cross-sectional area greater than a cross-sectional area of the second cavity.

3. The air duct shock pad according to claim 1 or 2, wherein the piston is provided with a first through hole formed in a vertical direction and a second through hole formed in a horizontal direction, the first through hole and the second through hole are communicated with each other, the second through hole penetrates through a side wall of the piston, the lower hard layer is provided with a pressure relief through hole, and the pressure relief through hole and the second through hole can correspond to each other.

4. The air duct shock pad according to claim 3, wherein the check valve includes a base installed in the air outlet channel of the energy accumulator, a through hole is formed in the middle of the base, a valve plate is installed at the bottom of the through hole, a guide rod extending into the through hole is connected to the valve plate, a return spring is sleeved on the periphery of the guide rod, the upper end of the return spring is fixedly connected with the inner top of the through hole, the lower end of the return spring is fixedly connected with the valve plate, and the ejector rod can extend into the through hole and contact with the guide rod.